// Parse the time to string
export const parseTime = (
  time?: object | string | number | null,
  cFormat?: string
): string | null => {
  if (time === undefined || !time) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date: Date
  if (typeof time === 'object') {
    date = time as Date
  } else {
    let currentTime: number | string = 0
    if (typeof time === 'string') {
      if (/^[0-9]+$/.test(time)) {
        // support "1548221490638"
        currentTime = parseInt(time, 2)
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        currentTime = time.replace(/-/gm, '/')
      }
    }
    if (typeof time === 'number' && time.toString().length === 10) {
      currentTime = time * 1000
    }
    date = new Date(currentTime)
  }
  const formatObj: { [key: string]: number } = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const timeStr = format.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') {
      return ['日', '一', '二', '三', '四', '五', '六'][value]
    }
    return value.toString().padStart(2, '0')
  })
  return timeStr
}

// Format and filter json data using filterKeys array
export const formatJson = (filterKeys: any, jsonData: any) =>
  jsonData.map((data: any) =>
    filterKeys.map((key: string) => {
      if (key === 'timestamp') {
        return parseTime(data[key])
      }
      return data[key]
    })
  )

/**
 * @param {number} time
 * @param {string} option
 * @returns {string | null}
 */
export function formatTime(time: number, option?: string): string | null {
  let currentTime: number | string = 0
  if (`${time}`.length === 10) {
    currentTime = parseInt(`${time}`, 2) * 1000
  } else {
    currentTime = +time
  }
  const d = new Date(currentTime)
  const now = Date.now()

  const diff = (now - d.getTime()) / 1000

  if (diff < 30) {
    return '刚刚'
  }
  if (diff < 3600) {
    // less 1 hour
    return `${Math.ceil(diff / 60)}分钟前`
  }
  if (diff < 3600 * 24) {
    return `${Math.ceil(diff / 3600)}小时前`
  }
  if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(currentTime, option)
  }
  return `${d.getMonth() + 1}月${d.getDate()}日${d.getHours()}时${d.getMinutes()}分`
}
